ALPP and endometrial cancer: Several authors have previously described variable levels of PLAP expression in high‐grade serous carcinomas [35, 43, 45, 52, 54, 59], endometroid carcinomas [4, 35, 45, 52], and other variants [4, 35, 52, 58] of ovarian cancer as well as in endometrial cancer [4, 35].